CEDS Anthropogenic ("SLCF") Emissions

[ssmithClimate]

Some links related to differences between the CEDS data going onto ESGF shortly (e.g. CMIP6+) and the CMIP6 data.

Regional/sectoral differences:
https://github.com/JGCRI/CEDS/blob/master/documentation/Version_comparison_figures_v_2024_04_01_vs_2016_07_16(CMIP6).pdf

Major differences readme related to the above:
https://github.com/JGCRI/CEDS/wiki/Release-Notes

The major updates to spatial gridding:
-- Large point sources, particularly SO2, more accurately located within countries
-- New seasonality, including COVID 2020 changes and recovery in 2021+
-- Updates to newer spatial proxies in general

Note that there will be further updates when we publish the final CMIP7 historical dataset at the end of this calendar year. For example, there have been signifiant updates to residential biomass consumption in the IEA energy statistics released 1-2 months ago.

[hegglinm]

Hi Steve, We are preparing for the PI control simulations. Any recommendation of how to use the SLCF emissions? Should we do the same as for the LLGHG and simply repeat 1850 values? Thanks, Michaela

[znichollscr]

Hi Michaela, as far as I can tell that is the advice (see also #169)

[pierrenabat]

Hello,
although supposed to be available for testing (see https://input4mips-controlled-vocabularies-cvs.readthedocs.io/en/latest/database-views/input4MIPs_delivery-summary_CMIP6Plus.html), several variables of CEDS-CMIP-2024-10-21 are no longer available for download on ESGF with this message:
"IMPORTANT! This dataset has been retracted and is no longer available for download."
Could you tell us what is the problem (can we test variables already downloaded before being retracted), and when a new version will be available ?
Thanks in advance for your answer,
Pierre

[znichollscr]

Hi Pierre, good question and thanks for raising it. We are still finalising the details (see #161) but, as I understand it, the issue is that negative numbers were found in some files when there shouldn't be any. So, I think you can use the files for testing data formats, naming etc. but I don't think I would use this for any model spin up or other such tests. The next version is in the publication queue I believe so, as I understand it, will hopefully be published and available this week.
Best,
Zeb

[pierrenabat]

Thanks for your answer !
Best,
Pierre

[znichollscr]

Hi Pierre, hopefully you've seen this already, but a new version of the dataset has been uploaded and is now available. For details, see https://input4mips-controlled-vocabularies-cvs.readthedocs.io/en/latest/dataset-overviews/anthropogenic-slcf-co2-emissions/ (#169 probably also worth following)

[pierrenabat]

Thank you for this information !